Rename libllvm() -> libllvm_path() (#38306)

Author: staticfloat

base/version.jl

@@ -250,7 +250,7 @@ else
     VersionNumber(libllvm_version_string)
 end
 
-libllvm() = ccall(:jl_get_libllvm, Any, ())
+libllvm_path() = ccall(:jl_get_libllvm, Any, ())
 
 function banner(io::IO = stdout)
     if GIT_VERSION_INFO.tagged_commit

test/sysinfo.jl

@@ -7,5 +7,5 @@ sprint(Base.Sys.cpu_summary)
 @test Base.Sys.uptime() > 0
 Base.Sys.loadavg()
 
-@test Base.libllvm() isa Symbol
-@test contains(String(Base.libllvm()), "LLVM")
+@test Base.libllvm_path() isa Symbol
+@test contains(String(Base.libllvm_path()), "LLVM")