bootstrap can now use BASH_VERBOSE=yes

dev/bootstrap.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-## dev pre-processor bootstrap rev 2017062001
+## dev pre-processor bootstrap rev 2018032201
 ## Yeah !!! A really tech sounding name... In fact it's just include emulation in bash
 
 function Usage {
@@ -9,6 +9,7 @@ function Usage {
 	echo "Usage:"
 	echo ""
 	echo "$0 --program=osync|osync_target_helper|obackup|pmocr [options to pass to program]"
+	echo "Can also be run with BASHVERBOSE=YES environment variable in order  to prefix program with bash -x"
 }
 
 
@@ -67,4 +68,8 @@ if type termux-fix-shebang > /dev/null 2>&1; then
 	termux-fix-shebang "$outputFileName.tmp.sh"
 fi
 
-"$outputFileName.tmp.sh" $opts
+if [ "$BASH_VERBOSE" == "yes" ]; then
+	bash -x "$outputFileName.tmp.sh" $opts
+else
+	"$outputFileName.tmp.sh" $opts
+fi