Add extensions ?GEMM_BATCH_STRIDED and CBLAS_?GEMM_BATCH_STRIDED #6096

Job	Run time
build (ubuntu-latest, gfortran, cmake)	13m 38s
neoverse_build	24s
msys2 (UCRT64, int64, Release)	11m 48s
build (ubuntu-latest, flang, make)	57s
build (ubuntu-latest, gfortran, make)	50s
msys2 (UCRT64, int32, Release)	8m 43s
msys2 (UCRT64, int32, None, mingw-w64-ucrt-x86_64, fc)	8m 2s
msys2 (CLANG64, int32, Release)	10m 34s
msys2 (CLANG64, int64, Release)	11m 59s
msys2 (MINGW32, int32, Release)	8m 6s
build (ubuntu-latest, flang, cmake)	6m 9s
cross_build (mips64el, mips64el-linux-gnuabi64, DYNAMIC_ARCH=1 TARGET=GENERIC)	38s
cross_build (mipsel, mipsel-linux-gnu, TARGET=MIPS1004K)	59s
build (macos-latest, gfortran, cmake)	17m 11s
cross_build (alpha, alpha-linux-gnu, TARGET=EV4)	36s
build (macos-latest, gfortran, make)	48s
cross_build (riscv64, riscv64-linux-gnu, TARGET=RISCV64_GENERIC)	40s
	1h 42m 2s

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