build.properties is now a template. This allows the build process to replace strings. Any token prefixed with SED should be replaced by the build script. The output goes to build.properties.
#!/bin/sh
set -x
ECLIPSE_DIR=/usr/eclipse
PDE_VER=3.5.1.R35x_20090820
EQUINOX_VER=1.0.201.R35x_v20090715
JAVA_CMD=/usr/java/jdk1.6.0_18/bin/java
ANT_SCRIPT=${1}
${JAVA_CMD} -jar ${ECLIPSE_DIR}/plugins/org.eclipse.equinox.launcher_${EQUINOX_VER}.jar -application org.eclipse.ant.core.antRunner -buildfile ${ANT_SCRIPT}