x11-toolkits/scintilla: Update to 4.4.5

• Update Makefile (add PATCH_WRKSRC because I needed to patch some files outside of WRKSRC, add some GNOME Uses that poudriere complained about, remove the pseudo-versioning because it was never being done in the actual compilation anyways, add a way to get a debug build)
• Update distinfo
• Correct URL in pkg-descr
• Remove patch-makefile (due to the PATCH_WRKSRC change)
• Add patch-gtk_makefile (due to the PATCH_WRKSRC change) and patch-lexilla_src_makefile
• Add patch-src_PositionCache.h, patch-src_Style.cxx and patch-src_Style.h, temporary patches for this version until 4.4.6 comes out to fix compilation with newer compilers
• Update pkg-plist

Use of ASAN is removed from the build as it was causing an ASAN error for me
when trying to run SciTE within a VM due to libGL (which isn't compiled with
ASAN, nor is the FreeBSD base system libraries), and the author of Scintilla
and SciTE said that it was fine to remove (his thought being that normally
Scintilla and SciTE aren't built with Clang, but since it is the default
compiler for FreeBSD and I want the software to work, it is better to just not
enable ASAN until it is enabled everywhere.

The removal of the version number on the libraries was due to consensus on IRC
in #bsdports that it wasn't necessary if the software was not originally doing
so in the first place.

Changelog:
https://www.scintilla.org/ScintillaHistory.html

PR: 250663
Submitted by: Naram Qashat <cyberbotx@cyberbotx.com> (maintainer)
MFH: 2020Q4