RFR: JDK-8302801: Remove fdlibm C sources [v4]

[Joe Darcy]

On Thu, 2 Mar 2023 18:27:09 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> make/autoconf/buildjdk-spec.gmk.in line 85:
>> 
>>> 83: JVM_LIBS := @OPENJDK_BUILD_JVM_LIBS@
>>> 84: 
>>> 85: FDLIBM_CFLAGS := @OPENJDK_BUILD_FDLIBM_CFLAGS@
>> 
>> If the hotspot build still needs `FDLIBM_CFLAGS`, then this line needs to stay.
>
> Okay; added back.

PS Successful Mach 5 job of default builds and tier 1 tests with this make line present.

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PR: https://git.openjdk.org/jdk/pull/12821