[gcc r15-2721] libiberty/argv.c: remove only_whitespace

https://gcc.gnu.org/g:ea238096883211f8c6e72f69912c51307996dc24 commit r15-2721-gea238096883211f8c6e72f69912c51307996dc24 Author: Andrew Burgess Date: Mon Jul 29 13:47:32 2024 +0100 libiberty/argv.c: remove only_whitespace After the commit: commit 5e1d530da87a6d2aa7e7197

[gcc r15-2063] libiberty/buildargv: handle input consisting of only white space

https://gcc.gnu.org/g:5e1d530da87a6d2aa7e719744cb278e7e54a6623 commit r15-2063-g5e1d530da87a6d2aa7e719744cb278e7e54a6623 Author: Andrew Burgess Date: Sat Feb 10 11:22:13 2024 + libiberty/buildargv: handle input consisting of only white space GDB makes use of the libiberty func

[gcc r15-2062] libiberty/buildargv: POSIX behaviour for backslash handling

https://gcc.gnu.org/g:a87954610f5e48a89b63a3194df9f5087bdc2f77 commit r15-2062-ga87954610f5e48a89b63a3194df9f5087bdc2f77 Author: Andrew Burgess Date: Wed Dec 6 16:45:31 2023 + libiberty/buildargv: POSIX behaviour for backslash handling GDB makes use of the libiberty function b