VCPKG sets CMAKE_CXX_FLAGS and CMAKE_C_FLAGS automatically; Apparently our code to set those flags has never worked and rather than ignoring most of it, it changed to putting it somewhere it doesn't belong.
This fix requires a patch to qt. This build includs a new pre-built Qt 5.12.3 with the patch applied.
See tools/qt5-builder/qtscript-crash-fix.patch to see actual patch applied.
* Touched bullet3 portfile to create new vckpg hash
* New urls for qt assets which include qscript patch hifi_vcpkg.py
* Updated tools/qt5-builder/ with qscript patch and README.md directions.
https://highfidelity.atlassian.net/browse/BUGZ-46
A qt bug was filed to hopefully get this bug fixed upstream.
https://bugreports.qt.io/browse/QTBUG-76176
* Reformat whitespace in README.md
* hifi_vckpg.py: Remove macos var/temp hack for vcpkg
* hifi_vckpg.py: Add ability to override HIFI_QT_INSTALL_ROOT dir with environment variable.
* hifi_vckpg.py: Update macos url for pre-built qt 5.12.3 on S3.
* cmake/ports/bullet3/portfile.cmake: add comment to force change in vcpkg hash.
* tools/qt-builder/README.md: updated formatting and added details about how to generate symbols for macos and pc
* tools/qt-builder: added prepare python scripts for symbols
* cmake/macros/SetupQt.cmake: Remove hardcoded var/temp qt cmake path
hifi_vcpkg.py will now download a new version of qt that contains release symbols.
made minor changes to bullet3/portfile.cmake to trigger a new vkpkg hash.
