use DISTFILES instead of OTHER_FILES in creator's own build system

it's the correct variable to use.

Change-Id: I9ec7795099097715a64969516cd3fae9e213a0f4
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/libs/qmljs/parser/parser.pri

@@ -22,5 +22,5 @@ SOURCES += \
     $$PWD/qmldirparser.cpp \
     $$PWD/qmlerror.cpp \
 
-OTHER_FILES += \
+DISTFILES += \
     $$PWD/qmljs.g

src/libs/qmljs/qmljs-lib.pri

@@ -88,7 +88,7 @@ SOURCES += \
 RESOURCES += \
     $$PWD/qmljs.qrc
 
-OTHER_FILES += \
+DISTFILES += \
     $$PWD/parser/qmljs.g
 
 contains(QT, gui) {