RFR: 8324584: Optimize Symbol and char* handling in ClassLoader

[Matias Saavedra Silva]

The call to `ClassLoader::load_class()` currently takes a Symbol* for the name and later extracts the string only to change it back into a Symbol* inside `ClassLoader::search_module_entries()` while also recalculating the package entry. This patch simply passes the string directly along with the package entry from the caller. Verified with tier1-5 tests.

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Commit messages:
 - Passed package entry in arguments
 - Merge branch 'master' into optimize_symbol_char_handling_8324584
 - 8324584: Optimize Symbol and char* handling in ClassLoader

Changes: https://git.openjdk.org/jdk/pull/17761/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17761&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8324584
  Stats: 12 lines in 3 files changed: 2 ins; 3 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/17761.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17761/head:pull/17761

PR: https://git.openjdk.org/jdk/pull/17761