forked from I2P_Developers/i2p.i2p

- merge mbuild_jbigi.sh into build_jbigi.sh and drop mbuild_jbigi.sh - make build.sh's tests optional - try to determine the locations of JAVA_HOME and I2P
- merge mbuild_jbigi.sh into build_jbigi.sh and drop mbuild_jbigi.sh - make build.sh's tests optional - try to determine the locations of JAVA_HOME and I2P