It regressed by 0.4.12-dev-1064-g 09c4d0a74b
when we tried to mute compiler warnings in the GCC Release configuration
for all modules, that do contain .y files.
In master we switched to use flex+bison to process those files at build-time
in 0.4.15-dev-2277-g 28dadda8be and at the same
time reverted the guilty rev.
In the backport to the old releases we do only revert, but do not introduce
flex+bison. This will reintroduce the warnings in GCC Release configuration.
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
