Fix SBOM glibc, gcc and bootjdk settings

[andrew-m-leonard]

Fixes #3445

Currently GLIBC is not being detected correctly.
Bootjdk is also missing the "+build".

• Fixed various grep/sed and invocation issues with getting GLIBC settings from features.h, and ensure works on all platforms.
• Updated to detect libc type from the build configuration, and then handle MUSL or GLIBC accordingly.
• Fixed Bootjdk detect to find btto jdk location from the build configuration, and then obtain the java.runtime.version.