Remove CL_REQUIRE/CL_PROVIDE(cl_I_factorial) as it's not really necessary.

factorial() is the only function which uses fakul_table[] array, so move
it into that function in order to avoid possible static initialization
order problems.

include/cln/integer.h

@@ -391,7 +391,6 @@ extern const cl_I expt_pos (const cl_I& x, const cl_I& y);
 
 // Fakultät (! n), wo n Fixnum >=0 ist. Ergebnis Integer.
 extern const cl_I factorial (uintL n);
-//CL_REQUIRE(cl_I_factorial)
 
 // Double factorial (!! n), with n Fixnum >=0.  Returns integer.
 extern const cl_I doublefactorial (uintL n);

src/integer/misc/combin/cl_I_factorial.cc

@@ -3,8 +3,6 @@
 // General includes.
 #include "cl_sysdep.h"
 
-CL_PROVIDE(cl_I_factorial)
-
 // Specification.
 #include "cln/integer.h"
 
@@ -30,6 +28,8 @@ namespace cln {
   //   vermeidet, daß oft große Zahlen mit ganz kleinen Zahlen multipliziert
   //   werden.
 
+const cl_I factorial (uintL n) // assume n >= 0 small
+{
 	static uintV const fakul_table [] = {
         1,
         1UL,
@@ -93,8 +93,6 @@ static uintV const fakul_table [] = {
         #endif
 	};
 
-const cl_I factorial (uintL n) // assume n >= 0 small
-{
       if (n < sizeof(fakul_table)/sizeof(cl_I))
         { return UV_to_I(fakul_table[n]); }
         else
@@ -124,4 +122,3 @@ const cl_I factorial (uintL n) // assume n >= 0 small
 
 }  // namespace cln
 
-CL_PROVIDE_END(cl_I_factorial)