Revert "We have no choice but to lie about windows 7 on mingw."

This reverts commit 5137c600bd0df84973dd34ff9ffe311f27978f8f.
Revert "Convert winmm to use CreateThread and add missing WAVE_FORMAT_48s16 macro for MinGW"

This reverts commit 58166560298490fdfde041f37f535ec6aed7f181.
Revert "Force being outside speex."

This reverts commit 356ee9e85ca2f5999cfa18f356b103dffe09fbbd.
Revert "Upgraded wasapi to use CreateThread"

This reverts commit 77cadff1eb537f14cd697b19d3a67cfbfe2b4cae.