Update README.windows.md

added supporting information in cases when packages are failing to build in Windows
Add OPENBLAS_NO_AVX build option to disable AVX kernels

useful for compiling with OPENBLAS_DYNAMIC_ARCH = 1 using old binutils versions
Fix check for BUILD_LLVM_CLANG when LLVM_VER=svn.
fix bug in readall(TTY), and modify a repl test to sometimes trigger this potential race condition
Simplify implementation of centralize_sumabs2

Also fix a bounds violation when computing the variance of a vector
with a single element
Merge pull request #7492 from JuliaLang/sjk/centralize_sumabs2

Simplify implementation of centralize_sumabs2
Merge pull request #6516 from fruser/patch-1

Update README.windows.md
Use access/_waccess for isreadable
Merge pull request #7476 from tkelman/openblas-noavx

Add OPENBLAS_NO_AVX build option to disable AVX kernels
Merge pull request #7481 from crayxt/patch-1

Fix check for BUILD_LLVM_CLANG when LLVM_VER=svn.
remove unused repl.expmap
Add debug output to linalg4 tests
Revert "Use access/_waccess for isreadable"

This reverts commit ff9a2c95823aa8cbf1e2eceb75c09814e4b92c38.
Revert "Partially address #7385"

This reverts commit a487dcf44cc7cd8da9d1e05bbf8a32a04a109574.
Do not include JIT.h header file on MCJIT builds.

Minor cleanup.
Wordcount fix (#7492)
add checked integer truncation intrinsics
Merge branch 'master' of github.com:JuliaLang/julia
Merge pull request #7500 from crayxt/patch-2

Do not include JIT.h header file on MCJIT builds.
change comprehension lowering to trust only length() for iteration. fixes #7427