graphics/rawtherapee: build stability improvements
- on some systems, the base binutils's ar does not support --plugin. Use BINARY_ALIAS to make sure the port/package binutils's ar and ranlib are used. [1]
- while here, disable TCMALLOC on FreeBSD 11, which appears to cause strange errors in the run-time self-tests -> bump PORTREVISION to flush out old packages
- while here, rearrange a bit per portclippy's suggestions
PR: 251041 [1]
PR: 240594 comment #9 [1]
Reported by: rozhuk.im@gmail.com [1]