Add a new package for IcedTea (#4804)

* alsa-lib: new package

* cups: new package

* icedtea: new package

* icedtea: adding JAVA_HOME variable

* alsa: removing placeholder

* icedtea: typo fix

* alsa: fixing formattting

* icedtea: formatting fixes and cleanup

* icedtea: additional cleanup

* jdk: adding provides('java') to jdk, setting jdk to default java.

* icedtea: adding jdk as a dependency

* java: changing depends_on('jdk') and similar entries to depends_on('java')

* icedtea: removing unused imports, trying to placate flake8.

* fastqc: fixing flake8 error

* bazel: fixing typo in java dependency

* jdk: changing provides java to a range

* icedtea: cleaning up. Splitting up checksums.

* icedtea: jdk dependency is build only

var/spack/repos/builtin/packages/antlr/package.py

@@ -45,7 +45,7 @@ class Antlr(AutotoolsPackage):
     variant('python', default=False, description='Enable ANTLR for Python')
 
     extends('python', when='+python')
-    depends_on('jdk', type=('build', 'run'), when='+java')
+    depends_on('java', type=('build', 'run'), when='+java')
 
     def configure_args(self):
         spec = self.spec