v24

• Support SOURCE_DATE_EPOCH
• Updated robust Python macros
• New gem macros
• Support linux-current package
• Updated meson macros (check)
• Support new lto, thin-lto, no-symbolic args for list-type optimize key
• Drop unsupported flags for Solus builds (-ffunction-sections -fdata-sections etc)
• Ensure clang can happily operate in all modes
• Fix FCFLAGS & FFLAGS

etc.