Update shell files to use /bin/bash and POSIX .

bash's earlier problems with subshells running scripts starting #!/bin/bash
seem to be solved, so explicitly mark all scripts as requiring bash.
Furthermore, change all source built-ins to prefix the path with "./" as
required by POSIX. Together these changes should stop further problems
with changes of source built-in semantics in future.

scripts/config-printflags.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #  lw-build-system/scripts/config-printflags.sh
 #
 #  (c)2009, Laurence Withers <l@lwithers.me.uk>.

scripts/module-create.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # lw-build-system/scripts/module-create.sh
 #
 #  (c)2009, Laurence Withers, <l@lwithers.me.uk>.
@@ -19,7 +19,7 @@ cd $(dirname $(pwd))
 P=$(basename $(pwd))
 TOP=$(pwd)
 [ -z "${VERBOSE}" ] && VERBOSE="0"
-source scripts/functions.sh || exit 1
+source "./scripts/functions.sh" || exit 1
 
 
 
@@ -62,7 +62,7 @@ get_cname() {
 #   for each argument X, it will replace @X@ with ${X}
 do_parameter_subst() {
     CNAME=$(get_cname ${NAME})
-    do_cmd source ~/.lwbuildrc || exit 1
+    do_cmd source "~/.lwbuildrc" || exit 1
     for param in P NAME CNAME AUTHOR EMAIL VIM_MODELINE KATE_MODELINE $@
     do
         do_cmd_redir sedscript echo "s,@${param}@,${!param},g" || exit 1
@@ -113,7 +113,7 @@ do_cmd cd src/${NAME} || cleanup
 do_cmd rm instantiate || cleanup
 do_cmd_redir .params echo "${MODULE_PARAMS}" || cleanup
 
-( source ../../${TEMPLATE}/instantiate ) || cleanup
+( source "../../${TEMPLATE}/instantiate" ) || cleanup
 
 print_success "Module instantiated"
 grep -r "@TODO@" .

scripts/release.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # lw-build-system/scripts/release.sh
 #
 #  (c)2009, Laurence Withers, <l@lwithers.me.uk>.

scripts/version.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #  lw-build-system/scripts/version.sh
 #
 #  (c)2009, Laurence Withers <l@lwithers.me.uk>.
@@ -43,32 +43,32 @@ edit_versions() {
 }
 
 bump_major() {
-    source version
+    source "./version"
     edit_versions "version" "VERMAJOR" "$[${VERMAJOR} + 1]" "VERMINOR" "0" "VERMICRO" "0"
 }
 
 bump_minor() {
-    source version
+    source "./version"
     edit_versions "version" "VERMINOR" "$[${VERMINOR} + 1]" "VERMICRO" "0"
 }
 
 bump_micro() {
-    source version
+    source "./version"
     edit_versions "version" "VERMICRO" "$[${VERMICRO} + 1]"
 }
 
 bump_somajor() {
-    source src/$1/soversion
+    source "./src/$1/soversion"
     edit_versions "src/$1/soversion" "SOMAJOR" "$[${SOMAJOR} + 1]" "SOMINOR" "0" "SOMICRO" "0"
 }
 
 bump_somicro() {
-    source src/$1/soversion
+    source "./src/$1/soversion"
     edit_versions "src/$1/soversion" "SOMICRO" "$[${SOMICRO} + 1]"
 }
 
 do_tag() {
-    source version
+    source "./version"
     git tag "${VERMAJOR}.${VERMINOR}.${VERMICRO}"
 }