Replace use of ASM-renamed by original ASM

Replace use of ASM-renamed by original ASM

This involves replacing references in weaver application code as well as
a few tests.

In order to make AspectJ weaver + tools contain a relocated ASM version,
I added a Maven Shade relocation step after Maven Assembly created the
uber JARs. Relocation works for both binaries and sources and also
encompasses Class::forName calls like in class AsmDetector.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>