Merge bitcoin/bitcoin#25457: Use more specific path when including memenv.h header

f3b5c1e Use more specific path when including `memenv.h` header (Hennadii Stepanov)

Pull request description:

  This PR makes our code base compatible with `leveldb`'s own CMake [project](https://github.com/bitcoin/bitcoin/blob/master/src/leveldb/CMakeLists.txt).

  Required for hebasto/bitcoin#3.

  As a justification, please note that internally `leveldb` uses `#include "helpers/memenv/memenv.h"` rather `#include "memenv.h"`.

  #### Guix builds on `arm64`:
  ```
  # find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
  0e069318a681f9f848e803e5df8b25426b47ddc8994a21e0b83f0f86e7db7ae0  guix-build-f3b5c1e4522f/output/arm-linux-gnueabihf/SHA256SUMS.part
  e68e1b65514d42f1e33b2754356b68d3ddea1fe9df89d02df51375792867dd8c  guix-build-f3b5c1e4522f/output/arm-linux-gnueabihf/bitcoin-f3b5c1e4522f-arm-linux-gnueabihf-debug.tar.gz
  6b1b5c1f9525e8e467d038751bfc070ed6cbfbd42b17add2faac76fee421343e  guix-build-f3b5c1e4522f/output/arm-linux-gnueabihf/bitcoin-f3b5c1e4522f-arm-linux-gnueabihf.tar.gz
  9f8e941f37aa243fd36c1eaade9b88081b2a27562bfe7d8208d3c6021ecb6f03  guix-build-f3b5c1e4522f/output/arm64-apple-darwin/SHA256SUMS.part
  88cf46d00e67f3493e6ecbb85002ca0ff93dd47af3e93e51d95f92ed3218752f  guix-build-f3b5c1e4522f/output/arm64-apple-darwin/bitcoin-f3b5c1e4522f-arm64-apple-darwin-unsigned.dmg
  5afa9ae6943386ae600d612f1ed4831c0e92011f87284ae25465c2ffc6b8bb2b  guix-build-f3b5c1e4522f/output/arm64-apple-darwin/bitcoin-f3b5c1e4522f-arm64-apple-darwin-unsigned.tar.gz
  0b72a400f842ff31233ced2aadf0b8309ba6695b075b9f4345708dca235f6368  guix-build-f3b5c1e4522f/output/arm64-apple-darwin/bitcoin-f3b5c1e4522f-arm64-apple-darwin.tar.gz
  7912417348175c293002ccd3413ecb53c5a1d29a234959a94bdbd6481bd58d08  guix-build-f3b5c1e4522f/output/dist-archive/bitcoin-f3b5c1e4522f.tar.gz
  f8d28c57dc97fd1e6844fcb2679f2a44fc360ef37aad3fc4185fa1d091baf4b1  guix-build-f3b5c1e4522f/output/powerpc64-linux-gnu/SHA256SUMS.part
  c219a024c95bcdfe28961c18b8118152becf201b00f9e0e28ff35a7a2646fc9b  guix-build-f3b5c1e4522f/output/powerpc64-linux-gnu/bitcoin-f3b5c1e4522f-powerpc64-linux-gnu-debug.tar.gz
  2790ff48593be1699e4175cc31a6cc11fd2e758cdc99220c5a87ddb658d8a794  guix-build-f3b5c1e4522f/output/powerpc64-linux-gnu/bitcoin-f3b5c1e4522f-powerpc64-linux-gnu.tar.gz
  8d13f9f6141776263faceb396cbe3089e5c165523a5da160ba9ec6814744f7d4  guix-build-f3b5c1e4522f/output/powerpc64le-linux-gnu/SHA256SUMS.part
  72c1e8d7a9f2f0ff76c1dd84b4614202ce6734cb8ff29b2cf2cfc20a218d3aa5  guix-build-f3b5c1e4522f/output/powerpc64le-linux-gnu/bitcoin-f3b5c1e4522f-powerpc64le-linux-gnu-debug.tar.gz
  ed0494b336a1ae00050137ed0d18130d5c1213e6d45fada439de4e799ebfb720  guix-build-f3b5c1e4522f/output/powerpc64le-linux-gnu/bitcoin-f3b5c1e4522f-powerpc64le-linux-gnu.tar.gz
  a2a11b57a4a93b0b079c87c303e4c5250b16994d20f87ae362850efc1c181e57  guix-build-f3b5c1e4522f/output/riscv64-linux-gnu/SHA256SUMS.part
  ff63220629ef4b318cc9c2b858204961bc29fd0e901817a39e50e6893925f153  guix-build-f3b5c1e4522f/output/riscv64-linux-gnu/bitcoin-f3b5c1e4522f-riscv64-linux-gnu-debug.tar.gz
  eb0c0b3709a2d4fe9a6c18ad7a14b90a32fe8a5a7d72f75400ae014f2c847264  guix-build-f3b5c1e4522f/output/riscv64-linux-gnu/bitcoin-f3b5c1e4522f-riscv64-linux-gnu.tar.gz
  a82bb28e2a8c6523854f4f9d6ff89d6ba096fff526f17bf6182fd6b2ebf96395  guix-build-f3b5c1e4522f/output/x86_64-apple-darwin/SHA256SUMS.part
  91d2eea67bfde7a363c6ede8c358fb3de842b55cfe428abafa7b5985d619c62c  guix-build-f3b5c1e4522f/output/x86_64-apple-darwin/bitcoin-f3b5c1e4522f-x86_64-apple-darwin-unsigned.dmg
  f3cbc79b8fac7e8a8c9ba63b774cadb5a09cd64cc942e7b68cd1fc566b371021  guix-build-f3b5c1e4522f/output/x86_64-apple-darwin/bitcoin-f3b5c1e4522f-x86_64-apple-darwin-unsigned.tar.gz
  91fb98ed086613bb85959e9fc060ef0f816d5b4d52087b003c6a72ecf1c1309b  guix-build-f3b5c1e4522f/output/x86_64-apple-darwin/bitcoin-f3b5c1e4522f-x86_64-apple-darwin.tar.gz
  62309af3fc8316abd4c8f8285c666c568c140b9312f252a47ca6611fb51fef5e  guix-build-f3b5c1e4522f/output/x86_64-linux-gnu/SHA256SUMS.part
  deb27b75f52fb40cd13bfc6d594ed5ff0d82d1c211e2a6a91b9ca06ee3b8335b  guix-build-f3b5c1e4522f/output/x86_64-linux-gnu/bitcoin-f3b5c1e4522f-x86_64-linux-gnu-debug.tar.gz
  89faeb1f32f0447d26a73253a9f581b40b01982862351a7dd0cee05c8dbf29cc  guix-build-f3b5c1e4522f/output/x86_64-linux-gnu/bitcoin-f3b5c1e4522f-x86_64-linux-gnu.tar.gz
  5de46eec42bcd1e2e0fd3c9c6978a8a945b95411a9051fac9bb8a65d6b4875a5  guix-build-f3b5c1e4522f/output/x86_64-w64-mingw32/SHA256SUMS.part
  3271137a901889a38214173f01f96ae98385ea607e9573eaa2966e68c68401e1  guix-build-f3b5c1e4522f/output/x86_64-w64-mingw32/bitcoin-f3b5c1e4522f-win64-debug.zip
  7a74bf455bffa0d2abb99ce31ea1ef8088928f54c1f3c6e27044392f27e3e752  guix-build-f3b5c1e4522f/output/x86_64-w64-mingw32/bitcoin-f3b5c1e4522f-win64-setup-unsigned.exe
  73a23fd9846e615afcd569adc79fafdcf55b0efa9c383d2d0c9579fb0f79b91a  guix-build-f3b5c1e4522f/output/x86_64-w64-mingw32/bitcoin-f3b5c1e4522f-win64-unsigned.tar.gz
  ee5f3f9eb65f0ac1c0879d0aaa88cf20d8ca9329ba505f77580a0c9b57cd3244  guix-build-f3b5c1e4522f/output/x86_64-w64-mingw32/bitcoin-f3b5c1e4522f-win64.zip
  ```

ACKs for top commit:
  laanwj:
    Code review ACK f3b5c1e
  fanquake:
    ACK f3b5c1e

Tree-SHA512: 62e7cf49bc4ce08c8373a0fcfaf4ca10a83d18d0d00bdb21983c25b4b9192ace74acf64362b47faa429d13dbaf63be953fd3aa3b92366603866a472f95ef09a1

Author: laanwj

src/Makefile.leveldb.include

@@ -13,7 +13,6 @@ LIBMEMENV = $(LIBMEMENV_INT)
 
 LEVELDB_CPPFLAGS =
 LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/include
-LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/helpers/memenv
 
 LEVELDB_CPPFLAGS_INT =
 LEVELDB_CPPFLAGS_INT += -I$(srcdir)/leveldb

src/dbwrapper.cpp

@@ -10,7 +10,7 @@
 #include <leveldb/cache.h>
 #include <leveldb/env.h>
 #include <leveldb/filter_policy.h>
-#include <memenv.h>
+#include <leveldb/helpers/memenv/memenv.h>
 #include <stdint.h>
 #include <algorithm>