Rename DataEntry -> Function1

Function1 is an abstract base-class of run-time selectable unary
functions which may be composed of other Function1's allowing the user
to specify complex functions of a single scalar variable, e.g. time.
The implementations need not be a simple or continuous functions;
interpolated tables and polynomials are also supported.  In fact form of
mapping between a single scalar input and a single primitive type output
is supportable.

The primary application of Function1 is in time-varying boundary
conditions, it also used for other functions of time, e.g. injected mass
is spray simulations but is not limited to functions of time.

applications/test/Function1/Make/options

@@ -0,0 +1,16 @@
+EXE_INC = \
+    -DFULLDEBUG -g -O0 \
+    -I$(LIB_SRC)/lagrangian/intermediate/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/radiation/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/thermophysicalFunctions/lnInclude \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude
+
+EXE_LIBS = \
+    -llagrangianIntermediate \
+    -lradiationModels \
+    -lthermophysicalFunctions \
+    -lregionModels \
+    -lfiniteVolume \
+    -lmeshTools \
+    -lsampling