Rename MinimumMacOSRequirement to MacOSRequirement

Move MinimumMacOSRequirement to compat.

Library/Homebrew/compat/requirements.rb

@@ -17,3 +17,4 @@ PythonDependency           = PythonRequirement
 TuntapDependency           = TuntapRequirement
 X11Dependency              = X11Requirement
 ConflictsWithBinaryOsxfuse = NonBinaryOsxfuseRequirement
+MinimumMacOSRequirement    = MacOSRequirement

Library/Homebrew/dependency_collector.rb

@@ -106,7 +106,7 @@ class DependencyCollector
     when :x11        then X11Requirement.new(spec.to_s, tags)
     when :xcode      then XcodeRequirement.new(tags)
     when :linux      then LinuxRequirement.new(tags)
-    when :macos      then MinimumMacOSRequirement.new(tags)
+    when :macos      then MacOSRequirement.new(tags)
     when :mysql      then MysqlRequirement.new(tags)
     when :postgresql then PostgresqlRequirement.new(tags)
     when :gpg        then GPG2Requirement.new(tags)

Library/Homebrew/requirements.rb

@@ -3,7 +3,7 @@ require "requirements/fortran_requirement"
 require "requirements/gpg2_requirement"
 require "requirements/language_module_requirement"
 require "requirements/linux_requirement"
-require "requirements/minimum_macos_requirement"
+require "requirements/macos_requirement"
 require "requirements/maximum_macos_requirement"
 require "requirements/mpi_requirement"
 require "requirements/osxfuse_requirement"

Library/Homebrew/requirements/minimum_macos_requirement.rb → Library/Homebrew/requirements/macos_requirement.rb

 require "requirement"
 
-class MinimumMacOSRequirement < Requirement
+class MacOSRequirement < Requirement
   fatal true
 
   def initialize(tags = [])

Library/Homebrew/test/os_requirement_spec.rb

 require "requirements/linux_requirement"
-require "requirements/minimum_macos_requirement"
+require "requirements/macos_requirement"
 
 describe LinuxRequirement do
   describe "#satisfied?" do
@@ -9,7 +9,7 @@ describe LinuxRequirement do
   end
 end
 
-describe MinimumMacOSRequirement do
+describe MacOSRequirement do
   describe "#satisfied?" do
     it "returns true if OS is macOS" do
       expect(subject.satisfied?).to eq(OS.mac?)