Correct some file permissions.

Change-Id: I4a092a19d6a9c66dfeb2777c9655aa4b19d11e16
diff --git a/apps/gui/skin_engine/skin_display.c b/apps/gui/skin_engine/skin_display.c
old mode 100755
new mode 100644
diff --git a/apps/keymaps/keymap-clip.c b/apps/keymaps/keymap-clip.c
old mode 100755
new mode 100644
diff --git a/apps/playlist.c b/apps/playlist.c
old mode 100755
new mode 100644
diff --git a/manual/getting_started/sansaAMS_install.tex b/manual/getting_started/sansaAMS_install.tex
old mode 100755
new mode 100644
diff --git a/manual/platform/keymap-sansaclip.tex b/manual/platform/keymap-sansaclip.tex
old mode 100755
new mode 100644
diff --git a/manual/plugins/stopwatch.tex b/manual/plugins/stopwatch.tex
old mode 100755
new mode 100644