Mask gdb server since it breaks heavily on musl

profiles/base/package.use.mask

 # awilfox <awilfox@adelielinux.org> (27 Mar 2016)
 # libsanitizer does not work on musl.
 sys-devel/gcc sanitize
+
+# awilfox <awilfox@adelielinux.org> (22 Apr 2016)
+# we don't want Gentoo branding on our LibreOffice packages.
+app-office/libreoffice branding
+
+# awilfox <awilfox@adelielinux.org> (23 Apr 2016)
+# GDB server is not compatible with musl.
+sys-devel/gdb server