[jdk13u-dev] RFR: 8249821: Separate libharfbuzz from libfontmanager

[Olga Mikhaltsova]

I'd like to backport JDK-8249821 to jdk13u for parity with jdk11u.
The original patch applies almost cleanly except for the only one file Awt2dLibraries.gmk that is in the another directory: make/lib/Awt2dLibraries.gmk instead of make/modules/java.desktop/lib/Awt2dLibraries.gmk. The patch for this file applied manually.
I observe the appearence of the cast errors on the Linux 32 bits platform during compilation and I'm going to backport JDK-8250605 right after in order to fix it.

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Commit messages:
- Backport b1ff2bd00a6a289be29158e0acd134151b468d41

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/301/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=301&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8249821
Stats: 78 lines in 199 files changed: 55 ins; 10 del; 13 mod
Patch: https://git.openjdk.java.net/jdk13u-dev/pull/301.diff
Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/301/head:pull/301

PR: https://git.openjdk.java.net/jdk13u-dev/pull/301