glib: fix pre phases

*Phases are strings, not arrays.

pkgs/development/libraries/glib/setup-hook.sh

···
 glibPreInstallPhase() {
   installFlagsArray+=("gsettingsschemadir=${!outputLib}/share/gsettings-schemas/$name/glib-2.0/schemas/")
 }
-preInstallPhases+=(glibPreInstallPhase)
+preInstallPhases+=" glibPreInstallPhase"
 
 glibPreFixupPhase() {
     # Move gschemas in case the install flag didn't help
···
 
     addToSearchPath GSETTINGS_SCHEMAS_PATH "${!outputLib}/share/gsettings-schemas/$name"
 }
-preFixupPhases+=(glibPreFixupPhase)
-
+preFixupPhases+=" glibPreFixupPhase"