scripts/*: Declare several constant variables read-only

Be more semantically accurate and avoid accidental overwriting of some
configuration variables that are considered to be constant.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Signed-off-by: Dan McGee <dan@archlinux.org>

scripts/makepkg.sh.in

@@ -37,10 +37,10 @@ export TEXTDOMAINDIR='@localedir@'
 # file -i does not work on Mac OSX unless legacy mode is set
 export COMMAND_MODE='legacy'
 
-myver='@PACKAGE_VERSION@'
-confdir='@sysconfdir@'
-BUILDSCRIPT='@BUILDSCRIPT@'
-startdir="$PWD"
+declare -r myver='@PACKAGE_VERSION@'
+declare -r confdir='@sysconfdir@'
+declare -r BUILDSCRIPT='@BUILDSCRIPT@'
+declare -r startdir="$PWD"
 
 packaging_options=('strip' 'docs' 'libtool' 'emptydirs' 'zipman' 'purge' 'upx')
 other_options=('ccache' 'distcc' 'buildflags' 'makeflags')

scripts/pacman-db-upgrade.sh.in

@@ -23,7 +23,7 @@
 export TEXTDOMAIN='pacman-scripts'
 export TEXTDOMAINDIR='@localedir@'
 
-myver='@PACKAGE_VERSION@'
+declare -r myver='@PACKAGE_VERSION@'
 
 eval $(awk '/DBPath/ {print $1$2$3}' @sysconfdir@/pacman.conf)
 dbroot="${DBPath:-@localstatedir@/lib/pacman/}"

scripts/pacman-key.sh.in

@@ -24,7 +24,7 @@
 export TEXTDOMAIN='pacman-scripts'
 export TEXTDOMAINDIR='@localedir@'
 
-myver="@PACKAGE_VERSION@"
+declare -r myver="@PACKAGE_VERSION@"
 
 # Options
 ADD=0

scripts/pacman-optimize.sh.in

@@ -24,7 +24,7 @@
 export TEXTDOMAIN='pacman-scripts'
 export TEXTDOMAINDIR='@localedir@'
 
-myver='@PACKAGE_VERSION@'
+declare -r myver='@PACKAGE_VERSION@'
 
 eval $(awk '/DBPath/ {print $1$2$3}' @sysconfdir@/pacman.conf)
 dbroot="${DBPath:-@localstatedir@/lib/pacman/}"

scripts/pkgdelta.sh.in

@@ -26,7 +26,7 @@ set -o errexit
 export TEXTDOMAIN='pacman-scripts'
 export TEXTDOMAINDIR='@localedir@'
 
-myver='@PACKAGE_VERSION@'
+declare -r myver='@PACKAGE_VERSION@'
 
 QUIET=0
 

scripts/repo-add.sh.in

@@ -25,8 +25,8 @@ shopt -s extglob
 export TEXTDOMAIN='pacman-scripts'
 export TEXTDOMAINDIR='@localedir@'
 
-myver='@PACKAGE_VERSION@'
-confdir='@sysconfdir@'
+declare -r myver='@PACKAGE_VERSION@'
+declare -r confdir='@sysconfdir@'
 
 QUIET=0
 DELTA=0