Update options.conf: set meson commit to HEAD; fix Debian source URLs

options.conf

@@ -47,11 +47,11 @@ git_branch_wine=master
 ##########
 # These apply only on Debian/Ubuntu/Mint
 
-git_source_meson_debian="git://github.com/mesonbuild/meson.git"
-git_source_glslang_debian="git://github.com/KhronosGroup/glslang.git"
+git_source_meson_debian="https://github.com/mesonbuild/meson"
+git_source_glslang_debian="https://github.com/KhronosGroup/glslang"
 
 # Commits & branches: https://github.com/mesonbuild/meson
-git_commithash_meson=5d6dcf8850fcc5d552f55943b6aa3582754dedf8
+git_commithash_meson=HEAD
 git_branch_meson=master
 
 # Commits & branches: https://github.com/KhronosGroup/glslang