Update README.windows.md

added supporting information in cases when packages are failing to build in Windows
Ease building with custom includedir.
Windows: Don't test ispath on deleted file or dir

These are failing with "stat: operation not permitted (EPERM)". There may still be
file handles open so the unlinked file and removed directory cannot be stat-ed.
fix inline documentation for SparseMatrixCSC
fix mpfr test failure on 64 bit Windows

Ref https://github.com/JuliaLang/julia/issues/3399

BigFloat^Int goes to MPFR on every platform other than Win64,
because Win64 is the only place that Julia Int is bigger than Clong.
On Win64 it's going to power_by_squaring resulting in a differently-rounded result.
Remove extraneous export of undefined symbols ⊂ and ⊄
Fix pcre.h search path for custom build_includedir.
Merge pull request #7346 from astrieanna/symbols

Remove extraneous export of undefined symbols ⊂ and ⊄
Merge pull request #7343 from tkelman/patch-4

fix mpfr test failure on 64 bit Windows
force serial install of fftw-single and fftw-double, to avoid conflicting install actions when doing a parallel build
missing : for codeblock

One code example is showing up as a block quote due to a missing ':'
Merge pull request #7350 from bcj/patch-1

missing : for codeblock
Add |> to punctuation list
Correct warning for Profile buffer being full
Merge branch 'master' of git://github.com/mcprentiss/julia into mcprentiss-master

Conflicts:
	doc/stdlib/punctuation.rst
Merge branch 'mcprentiss-master'
Revert "bump libuv"

This reverts commit 7078f0462e899abdc619e98384a5eff39293e322.
Revert "Correct warning for Profile buffer being full"

This reverts commit 4cc0f1f067e2a1941429fd48c53314510b5e5fab.
Cartesian: parse-time evaluation of A[3] when A is known

This allows efficient operations like this:

    indexes = [:i_2, :i_3]
    macroexpand(:(@nexprs 2 d->$indexes[d]))

This also centralizes the parse-time evaluation of expressions,
combining the new array reference with the previous arithmetic
and conditional evaluation, so that it can be done on a single
pass through the expression tree.
Revert "Add |> to punctuation list"

This reverts commit f5bdbe4d493e0ffa2b3843a8cd9ffab34dabb4e0.

Conflicts:

	doc/stdlib/punctuation.rst

This is not really punctuation, just an operator. It's also not just
for function chaining, it's also used for redirection. It's also not
clear what function chaining means. Also, people shouldn't use it.