Split plugin classes and derive AIFilePicker from BasicPluginBase (part 3).

This commit deletes all indra/media_plugins and copied one-on-one
the indra/plugins directory from my (imprudence) statemachine branch
(which contains the AIFilePicker patch).

git shows this as a lot of 'renamed' files because originally it
was a rename. However, there are a lot of changes as well: it's both
an upgrade to a newer plugin system (changes by LL) as well as an
upgrade to my refactored plugin system with a file picker as plugin.

Since this commit is a one-on-one copy, it disregards any changes
that were in Singularity and not in imprudence in indra/media_plugins
however. I will add those back in the next commit.

indra/plugins/base_basic/CMakeLists.txt

@@ -0,0 +1,39 @@
+# -*- cmake -*-
+
+project(basic_plugin_base)
+
+include(00-Common)
+include(LLCommon)
+include(LLPlugin)
+include(Linking)
+include(PluginAPI)
+
+include_directories(
+    ${LLPLUGIN_INCLUDE_DIRS}
+    ${LLCOMMON_INCLUDE_DIRS}
+)
+
+### basic_plugin_base
+
+if(NOT CMAKE_SIZEOF_VOID_P MATCHES 4)
+	if(WINDOWS)
+		add_definitions(/FIXED:NO)
+	else(WINDOWS) # not windows therefore gcc LINUX and DARWIN
+		add_definitions(-fPIC)
+	endif(WINDOWS)
+endif (NOT CMAKE_SIZEOF_VOID_P MATCHES 4)
+
+set(basic_plugin_base_SOURCE_FILES
+    basic_plugin_base.cpp
+)
+
+set(basic_plugin_base_HEADER_FILES
+    CMakeLists.txt
+
+    basic_plugin_base.h
+)
+
+add_library(basic_plugin_base
+    ${basic_plugin_base_SOURCE_FILES}
+)
+