add delphi .dcu

.DCU (Delphi Compiled Unit) files are binary files that are used between compiling source (text) and linking the executable. They're created by the compiler, joined together in memory, combined with the startup code and put into an actual executable (.EXE/.DLL/.BPL) by the linker

Delphi.gitignore

@@ -50,3 +50,56 @@
 # Delphi history and backups
 __history/
 *.~*
+# Uncomment these types if you want even more clean repository. But be careful.
+# It can make harm to an existing project source. Read explanations below.
+#
+# Resource files are binaries containing manifest, project icon and version info.
+# They can not be viewed as text or compared by diff-tools. Consider replacing them with .rc files.
+#*.res
+#
+# Type library file (binary). In old Delphi versions it should be stored.
+# Since Delphi 2009 it is produced from .ridl file and can safely be ignored.
+#*.tlb
+#
+# Diagram Portfolio file. Used by the diagram editor up to Delphi 7.
+# Uncomment this if you are not using diagrams or use newer Delphi version.
+#*.ddp
+#
+# Visual LiveBindings file. Added in Delphi XE2.
+# Uncomment this if you are not using LiveBindings Designer.
+#*.vlb
+#
+# Deployment Manager configuration file for your project. Added in Delphi XE2.
+# Uncomment this if it is not mobile development and you do not use remote debug feature.
+#*.deployproj
+#
+
+# Delphi compiler-generated binaries (safe to delete)
+*.exe
+*.dll
+*.bpl
+*.bpi
+*.dcp
+*.so
+*.apk
+*.drc
+*.map
+*.dres
+*.rsm
+*.tds
+
+# Delphi autogenerated files (duplicated info)
+*.cfg
+*Resource.rc
+
+# Delphi local files (user-specific info)
+*.local
+*.identcache
+*.projdata
+*.tvsconfig
+*.dsk
+
+# Delphi history and backups
+__history/
+*.~*
+*.dcu