Add macos specific scripts to build a songbook (windows like)

macos/clean.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+#
+echo "manually performs 'make clean'"
+rm -rf *.aux *.d *.toc *.out *.log *.nav *.snm *.sbx *.sxd

macos/cleanall.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+#
+echo "manually performs 'make cleanall'"
+./clean
+rm -rf *.pdf

macos/make.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+#
+echo "build tex file from songbook file"
+./songbook.py --songbook=books/$1.sb --output=$1.tex
+
+echo "first pdf compilation" 
+/usr/texbin/pdflatex $1.tex
+
+echo "build indexes"
+./songbook-makeindex.py $1_title.sxd > $1_title.sbx
+./songbook-makeindex.py $1_auth.sxd > $1_auth.sbx
+
+echo "second compilation to include indexes"
+/usr/texbin/pdflatex $1.tex