build: Fix Configuration::add_flag_all

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
build: Add globbing support

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
libstd: Add more functions from string.h

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
libstd: Add some functions from ctype.h

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>