common : use cpp-httplib as a cURL alternative for downloads (llama/16185)

* vendor : update httplib

Signed-off-by: Adrien Gallouët <[email protected]>

* common : use cpp-httplib as a cURL alternative for downloads

The existing cURL implementation is intentionally left untouched to
prevent any regressions and to allow for safe, side-by-side testing by
toggling the `LLAMA_CURL` CMake option.

Signed-off-by: Adrien Gallouët <[email protected]>

* ggml : Bump to Windows 10

Signed-off-by: Adrien Gallouët <[email protected]>

---------

Signed-off-by: Adrien Gallouët <[email protected]>

Author: angt

CMakeLists.txt

@@ -176,7 +176,7 @@ set(GGML_CPU_POWERPC_CPUTYPE "" CACHE STRING "ggml: CPU type for PowerPC")
 
 
 if (MINGW)
-    set(GGML_WIN_VER "0x602" CACHE STRING   "ggml: Windows version")
+    set(GGML_WIN_VER "0xA00" CACHE STRING   "ggml: Windows version")
 endif()
 
 # ggml core