Summary: On Linux, use vfork in case of an OOM.
Reviewed-by: dholmes, iklam

8214189: test/hotspot/jtreg/compiler/intrinsics/mathexact/MulExactLConstantTest.java fails on Windows x64 when run with -XX:-TieredCompilation
Reviewed-by: kvn

Reviewed-by: iveresov, kvn

Reviewed-by: aph, dholmes

Reviewed-by: kbarrett, stuefe

Reviewed-by: shade, kbarrett
Contributed-by: NSimon Tooke <stooke@redhat.com>

Reviewed-by: mdoerr, shade

Reviewed-by: kvn, dlong, aph

Reviewed-by: tschatzl, stuefe

Summary: Fix some integer overflows
Reviewed-by: jrose, kvn, kbarrett, adinn, iklam

Summary: Remove the corresponding @requires line
Reviewed-by: tschatzl

Summary: Memory pools can now be optional collection participants, e.g., G1 Old Gen in an incremental collection.
Reviewed-by: tschatzl, jcbeyler, andrew

Summary: Pass the empty string instead of NULL for safer strcmp usage
Reviewed-by: andrew
Contributed-by: NSiddhesh Poyarekar <siddhesh@gotplt.org>

Reviewed-by: kbarrett, vlivanov

Summary: Create separate launchers for clhsdb and hsdb since JDK 8 uses separate launchers for SA tools
Reviewed-by: kevinw, andrew

8208480: Test failure: assert(is_bound() || is_unused()) after JDK-8206075 in C1
Summary: Combine unbound Label assertion checking backports
Reviewed-by: andrew, coffeys

Reviewed-by: mdoerr
Contributed-by: NGustavo Serra Scalet <gustavo.scalet@eldorado.org.br>

Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes