hide mountpoints from nautilus

when building within a home directory, as /proc, /sys, etc are mounted
and unmounted into the chroot at various points in the build, corresponding
entries appear and disappear within the side panel of nautilus.

this is obviously undesirable.

use of `-o x-gvfs-hide` resolves this for the most part. i still see items
occasionally pop up and having spent some time experimenting, i'm putting
it down to buggy behaviour on the part of nautilus. (aside from those
appearing when debootstrap is running - debootstrap also needs this fix).

Gbp-Dch: Short

scripts/build/chroot_devpts

@@ -38,7 +38,7 @@ case "${1}" in
 		mkdir -p chroot/dev/pts
 
 		# Mounting /dev/pts
-		mount devpts-live -t devpts -o gid=5,mode=620 chroot/dev/pts || true
+		mount -t devpts -o gid=5,mode=620,x-gvfs-hide devpts-live chroot/dev/pts || true
 
 		# Creating stage file
 		Create_stagefile .build/chroot_devpts

scripts/build/chroot_proc

@@ -38,7 +38,7 @@ case "${1}" in
 		mkdir -p chroot/proc
 
 		# Mounting /proc
-		mount proc-live -t proc chroot/proc
+		mount -t proc -o x-gvfs-hide proc-live chroot/proc
 
 		# Creating stage file
 		Create_stagefile .build/chroot_proc

scripts/build/chroot_selinuxfs

@@ -40,7 +40,7 @@ case "${1}" in
 			mkdir -p chroot/sys/fs/selinux
 
 			# Mounting /sys/fs/selinux
-			mount selinuxfs-live -t selinuxfs chroot/sys/fs/selinux
+			mount -t selinuxfs -o x-gvfs-hide selinuxfs-live chroot/sys/fs/selinux
 
 			# Creating stage file
 			Create_stagefile .build/chroot_selinuxfs

scripts/build/chroot_sysfs

@@ -38,7 +38,7 @@ case "${1}" in
 		mkdir -p chroot/sys
 
 		# Mounting /sys
-		mount sysfs-live -t sysfs chroot/sys
+		mount -t sysfs -o x-gvfs-hide sysfs-live chroot/sys
 
 		# Creating stage file
 		Create_stagefile .build/chroot_sysfs

scripts/build/chroot_tmpfs

@@ -41,7 +41,7 @@ case "${1}" in
 
 		mv chroot/var/lib/dpkg chroot/var/lib/dpkg.tmp
 		mkdir chroot/var/lib/dpkg
-		mount -t tmpfs tmpfs chroot/var/lib/dpkg
+		mount -t tmpfs -o x-gvfs-hide tmpfs chroot/var/lib/dpkg
 		mv chroot/var/lib/dpkg.tmp/* chroot/var/lib/dpkg
 		rm -rf chroot/var/lib/dpkg.tmp