Cosmetic renaming

Renamed function dependencies_check to check_deps.

Also renamed files in scripts/ to have a .sh suffix which are bash shell
snippits:

   dependencies_check -> check_deps.sh
   common -> common.sh

Note check_deps.sh already existed in the tree but was an empty file
probably intended for the function now contained within.

Also added a comment at the top of the .sh files which are sourced so
that syntax-highlighting editors which distinguish between different
/bin/sh syntaxes have a clue to use the bash variant.

build.sh

@@ -156,11 +156,11 @@ export QUILT_NO_DIFF_INDEX=1
 export QUILT_NO_DIFF_TIMESTAMPS=1
 export QUILT_REFRESH_ARGS="-p ab"
 
-source ${SCRIPT_DIR}/common
+source ${SCRIPT_DIR}/common.sh
-source ${SCRIPT_DIR}/dependencies_check
+source ${SCRIPT_DIR}/check_deps.sh
 
 
-dependencies_check ${BASE_DIR}/depends
+check_deps ${BASE_DIR}/depends
 
 mkdir -p ${WORK_DIR}
 log "Begin ${BASE_DIR}"

scripts/check_deps.sh

@@ -0,0 +1,33 @@
+# bash #
+
+# check_deps
+# $@	Dependnecy files to check
+#
+# Each dependency is in the form of a tool to test for, optionally followed by
+# a : and the name of a package if the package on a Debian-ish system is not
+# named for the tool (i.e., qemu-user-static).
+check_deps()
+{
+	local depfile deps missing
+
+	for depfile in "$@"; do
+		if [[ -e "$depfile" ]]; then
+			deps="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < ${BASE_DIR}/depends)"
+
+		fi
+		for dep in $deps; do
+			if ! hash ${dep%:*} 2>/dev/null; then
+				missing="${missing:+$missing }${dep#*:}"
+			fi
+		done
+	done
+
+	if [[ "$missing" ]]; then
+		echo "Reqired dependencies not installed"
+		echo
+		echo "This can be resolved on Debian/Raspbian systems by installing:"
+		echo "$missing"
+		false
+	fi
+}
+export -f check_deps

scripts/common.sh

@@ -1,3 +1,5 @@
+# bash #
+
 log (){
 	date +"[%T] $@" | tee -a ${LOG_FILE}
 }

scripts/dependencies_check

@@ -1,30 +0,0 @@
-# dependencies_check
-# $@	Dependnecy files to check
-#
-# Each dependency is in the form of a tool to test for, optionally followed by
-# a : and the name of a package if the package on a Debian-ish system is not
-# named for the tool (i.e., qemu-user-static).
-dependencies_check()
-{
-	local depfile deps missing
-
-	for depfile in "$@"; do
-		if [[ -e "$depfile" ]]; then
-			deps="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < ${BASE_DIR}/depends)"
-
-		fi
-		for dep in $deps; do
-			if ! hash ${dep%:*} 2>/dev/null; then
-				missing="${missing:+$missing }${dep#*:}"
-			fi
-		done
-	done
-
-	if [[ "$missing" ]]; then
-		echo "Reqired dependencies not installed"
-		echo
-		echo "This can be resolved on Debian/Raspbian systems by installing:"
-		echo "$missing"
-		false
-	fi
-}