tdf#42949 Simplify use of rtl::math::approxEqual in include/basegfx/

Turns out we can save about 500Mb of preprocessor input if we use
rtl_math_approxEqual from rtl/math.h instead of its C++ wrapper
rtl::math::approxEqual from rtl/math.hxx

and manage the fallout accordingly.

Before:
bin/includebloat.awk | head
sum total bytes included (excluding system headers): 19017296671

After:
$ bin/includebloat.awk | head
sum total bytes included (excluding system headers): 18535432672

Change-Id: I1691171f3a309405a7099882ad9989d147f59118
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/92508
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

0 files changed, 0 insertions, 0 deletions