master build failure

[Phil Mayers]

With a clean checkout

./configure
make

...fails with:

CC src/modules/rlm_eap/libeap/eap_tls.c
src/modules/rlm_eap/libeap/eap_tls.c: In function ‘eaptls_success’:
src/modules/rlm_eap/libeap/eap_tls.c:202: warning: implicit declaration 
of function ‘eaptls_gen_eap_key’
src/modules/rlm_eap/libeap/eap_tls.c:202: warning: nested extern 
declaration of ‘eaptls_gen_eap_key’
CC src/modules/rlm_eap/libeap/mppe_keys.c
src/modules/rlm_eap/libeap/mppe_keys.c: In function ‘eapttls_gen_challenge’:
src/modules/rlm_eap/libeap/mppe_keys.c:184: error: 
‘EAPTLS_PRF_CHALLENGE’ undeclared (first use in this function)
src/modules/rlm_eap/libeap/mppe_keys.c:184: error: (Each undeclared 
identifier is reported only once
src/modules/rlm_eap/libeap/mppe_keys.c:184: error: for each function it 
appears in.)
src/modules/rlm_eap/libeap/mppe_keys.c: At top level:
src/modules/rlm_eap/libeap/mppe_keys.c:201: warning: no previous 
prototype for ‘eaptls_gen_eap_key’
src/modules/rlm_eap/libeap/mppe_keys.c: In function ‘eaptls_gen_eap_key’:
src/modules/rlm_eap/libeap/mppe_keys.c:209: error: ‘PW_EAP_SESSION_ID’ 
undeclared (first use in this function)
make: *** [build/objs/src/modules/rlm_eap/libeap/mppe_keys.lo] Error 1