Added OpenSSL EVP API support to HaiCrypt (--use-enclib=openssl-evp).

[jeandube]

Changes to CRYSPR framework required (-DCRYSPR2).
cryspr for openssl and openssl-evp tested
cryspr for gnutls and mbedtls upgraded for CRYSPR2 but not compiled nor tested with -DCRYSPR2
both can still be built with/without -DCRYSPR2.

Fixes #2141.

[maxsharabayko]

Reviewer Notes (In Progress)

• Add openssl-evp option value to the USE_ENCLIB build option description in docs/build/build-options.md,

[maxsharabayko]

A patch to add openssl-evp option value to the USE_ENCLIB build option description in docs/build/build-options.md,

index 8c87229c..bd20501a 100644
--- a/docs/build/build-options.md
+++ b/docs/build/build-options.md
@@ -58,7 +58,7 @@ Option details are given further below.
 | [`PTHREAD_LIBRARY`](#pthread_library)                        | 1.3.0 | `STRING`  | OFF        | Configures the path to a pthread library.  |
 | [`USE_BUSY_WAITING`](#use_busy_waiting)                      | 1.3.3 | `BOOL`    | OFF        | Enables more accurate sending times at the cost of potentially higher CPU load. |
 | [`USE_CXX_STD`](#use_cxx_std)                                | 1.4.2 | `STRING`  | OFF        | Enforces using a particular C++ standard (11, 14, 17, etc.) when compiling. |
-| [`USE_ENCLIB`](#use_enclib)                                  | 1.3.3 | `STRING`  | openssl    | Encryption library to be used (`openssl`, `gnutls`, `mbedtls`).  |
+| [`USE_ENCLIB`](#use_enclib)                                  | 1.3.3 | `STRING`  | openssl    | Encryption library to be used (`openssl`, `openssl-evp`, `gnutls`, `mbedtls`).  |
 | [`USE_GNUSTL`](#use_gnustl)                                  | 1.3.4 | `BOOL`    | OFF        | Use `pkg-config` with the `gnustl` package name to extract the header and library path for the C++ standard library.  |
 | [`USE_OPENSSL_PC`](#use_openssl_pc)                          | 1.3.0 | `BOOL`    | ON         | Use `pkg-config` to find OpenSSL libraries.  |
 | [`OPENSSL_USE_STATIC_LIBS`](#openssl_use_static_libs)        | 1.5.0 | `BOOL`    | OFF        | Link OpenSSL statically.  |
@@ -534,6 +534,7 @@ remember that:
 Encryption library to be used. Possible options for `<name>`:
 
 * openssl (default)
+* openssl-evp (OpenSSL EVP API)
 * gnutls (with nettle)
 * mbedtls