v20.02 release

New functionality
* string: New strrchr and stpcpy routines
* string: New Memory Tagging Extension (MTE) variants of strlen and strchr
* math: New vector version of pow(double)
* networking: Optimized ones' complement checksum for 32-bit and 64-bit Arm

Performance improvements
* string: Improved memcpy and memmove (SIMD and non-SIMD) for 64-bit Arm
* string: Improved memset for 64-bit Arm

Author: nsz-arm

README

@@ -8,7 +8,8 @@ Assignment Agreement, please follow the instructions in
 contributor-agreement.pdf. This is needed so upstreaming code
 to projects that require copyright assignment is possible.
 
-Regular quarterly releases are tagged as vYY.MM (e.g. v19.11).
+Regular quarterly releases are tagged as vYY.MM, the latest
+release is v20.02.
 
 Source code layout: